Home / 128,809.14-193,138.38-58,650.18

Finding the Fourth Proportional to 128,809.14, 193,138.38 and 58,650.18

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Solution

The fourth proportional to 128,809.14, 193,138.38 and 58,650.18 is: 87,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,809.14 : 193,138.38 = 58,650.18 : x
  2. Step 2: Convert to fraction form
    128,809.14/193,138.38 = 58,650.18/x
  3. Step 3: Cross multiply
    128,809.14x = 193,138.38 × 58,650.18
  4. Step 4: Simplify right side
    128,809.14x = 11,327,600,751.91
  5. Step 5: Solve for x
    x = 11,327,600,751.91/128,809.14
  6. Step 6: Final answer
    x = 87,940.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.